Remove local definition of _PATH_CP, and use <paths.h>, _PATH_CP is in the

CURRENT <paths.h>.

bin/mv/mv.c

@@ -59,6 +59,7 @@ __FBSDID("$FreeBSD$");
 #include <fcntl.h>
 #include <grp.h>
 #include <limits.h>
+#include <paths.h>
 #include <pwd.h>
 #include <stdio.h>
 #include <stdlib.h>

bin/mv/pathnames.h

@@ -35,4 +35,3 @@
  */
 
 #define	_PATH_RM	"/bin/rm"
-#define	_PATH_CP	"/bin/cp"